/**
* @param $item
* @return null|string
*/
private function build_edit_column($item)
{
switch ($item->get_item_type()) {
// category
case 'C':
return GradebookUtils::build_edit_icons_cat($item, $this->currentcat);
// evaluation
// evaluation
case 'E':
return GradebookUtils::build_edit_icons_eval($item, $this->currentcat->get_id());
// link
// link
case 'L':
return GradebookUtils::build_edit_icons_link($item, $this->currentcat->get_id());
}
}